About

About Me:

Oh, i should have updated this earlier. i'm back from an amazing year in the bay area. currently i'm studying electrical engineering at the Hamburg University of Technology.


Hometown:

Berkeley


Activity Feed

Joern left a comment for Howard Gordon
"Hi Howard,
those results look quite promising! What feature detector do you use? It looks like it is a little more sensitive to edges than corners. (Which shouldn't be a problem for calibrated stereo rigs but might be one for monoSLAM applications.)…"
Sep 17, 2009
Joern left a comment for Howard Gordon
"Hi Howard,
did you make any progress with your sparse stereo? I was checking your page for some sample images.
I'm currently trying to implement something pretty similar. Eventually the algorithm is supposed to track features in consecutive frames…"
Sep 14, 2009
Joern left a comment for Christian Moreton
"I considered that but (though i don't remember the formular exactly) the relation of distance to the object and spatial resolution is somewhat one over distance square while baselength (the distance of the two cameras) only helps linearly. I…"
Jul 23, 2009
Joern commented on Joern's blog post computer vision application for mobile platforms
"Thank you for recommending those videos. Especially the last one is of rather good quality.

Unfortunately the videos i'm looking for should be a little different. FPV videos are not well suited as i'm looking for videos from a fixed camera so that…"
Jul 2, 2009
Joern commented on Joern's blog post computer vision application for mobile platforms
"The lens mounts were custom made for that board. Essentially they are rings of solid aluminum with some thread for the lenses and four holes for 2.5mm screws in the ring. They are screwed to the board resulting in reasonable accuracy for aligning…"
Jun 30, 2009
Joern commented on Joern's blog post computer vision application for mobile platforms
"@Chris Yeah, i agree, the indoor blimp seems like the perfect airborne application for stereo vision. Not only the relatively small distanced but also the rather small velocity really make it a feasible approach for collision avoidance. The current…"
Jun 22, 2009
Joern posted a blog post
I didn't expect that fast response on uploading a picture otherwise i would have included a little more information. As i didn't know if anyone read it if i commented on my own picture, i figured i should make it a blog post.The picture was ment to…
Jun 21, 2009
Joern posted a photo
the camera i designed for vision applications for mobile robots. at the point the picture was taken the ethernet socket for data connection hadn't been soldered.
Jun 20, 2009
Joern posted a discussion
Hi,in order to investigate the potential of some vision application i'm looking for aerial videos taken with a downward facing camera.Preferably the video was recorded on board the plane so transmission didn't introduce error. Optimally the camera…
Jun 18, 2009
Joern left a comment for HugePanic
"Moin Matthias,

vielen Dank fuer die Antwort, speziell der Link war sehr hilfreich!
Sehr deutlich hat sie mir vor Augen gefuehrt, dass ich mir mehr Gedanken ueber die Dimensionierung machen sollte und vielleicht am Anfang mit einem kommerziellen…"
Oct 1, 2008
Joern left a comment for HugePanic
"Hi Matthias,
i just randomly found your profile and was interested in how you built your UAV Eins. So far i only worked on some vision aspects of autonomous flight but i would like to get started with an own airframe. Yours looked reasonably easy…"
Sep 30, 2008
Joern commented on Chris Anderson's blog post Bay Area UAV Fly-In: POSTPONED
"Oh, too bad. By then i will already have left the Bay Area. Can't you just celebrate mother's day on Saturday?"
May 8, 2008